<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style>
			
			#div1{
				width: 200px;
				height: 100px;
				background:red;
				float: left;
			}
			#div2{
				width: 700px;
				height: 80px;
				background:greenyellow;
				/*float: left;*/
			}
			#div3{
				width: 200px;
				height: 200px;
				background:orange;
				float: left;
			}
			#div4{
				width: 500px;
				height:60px;
				background:blue;
				/*float: left;*/
			}
		</style>
	</head>
	<body>
		<div id="div1">div1</div>
		<div id="div2">div2</div>
		<div id="div3">div3</div>
		<div id="div4">div4</div>
	</body>
</html>
